Home / 25,830.90-38,746.35-15,981.30

Finding the Fourth Proportional to 25,830.90, 38,746.35 and 15,981.30

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Solution

The fourth proportional to 25,830.90, 38,746.35 and 15,981.30 is: 23,971.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,830.90 : 38,746.35 = 15,981.30 : x
  2. Step 2: Convert to fraction form
    25,830.90/38,746.35 = 15,981.30/x
  3. Step 3: Cross multiply
    25,830.90x = 38,746.35 × 15,981.30
  4. Step 4: Simplify right side
    25,830.90x = 619,217,043.26
  5. Step 5: Solve for x
    x = 619,217,043.26/25,830.90
  6. Step 6: Final answer
    x = 23,971.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.